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enThu, 14 Dec 2017 02:15:22 GMTvBulletin60http://forums.mikeholt.com/images/misc/rss.pnghttp://forums.mikeholt.com/
Tying fire alarm system to Ansul systemhttp://forums.mikeholt.com/showthread.php?t=188198&goto=newpost
Wed, 29 Nov 2017 17:06:54 GMTHey guys! Long story short, wiring an Abdul fire suppression system for a small deli. Non-addressable system, so probably just going to be a a few...Hey guys! Long story short, wiring an Abdul fire suppression system for a small deli. Non-addressable system, so probably just going to be a a few smokes, a couple pull stations, and 3 horn strobes. I'm a little new to fire alarm wiring. Basically one of the Ansul micro switches will operate the intake and exhaust fans, and the other will kill the lights and receptacles under the hood. When that micro switch activates, I need it to activate all the fire alarms. So I'm not quite sure how to run this back to the fire control panel, as I will have 120v at the micro switch when the suppression system is activated. Any help with how to accomplish this?
]]>Low Voltage and Limited Energygulf0927http://forums.mikeholt.com/showthread.php?t=188198Intermatic ST01 Timer Losing Timehttp://forums.mikeholt.com/showthread.php?t=187981&goto=newpost
Thu, 16 Nov 2017 21:58:04 GMTI have experienced the same problem with the ST01 timer referenced in an old post with the same title. I have two ST01 timers. The first switches 120...I have experienced the same problem with the ST01 timer referenced in an old post with the same title. I have two ST01 timers. The first switches 120 VAC to 5 LED bulbs and has worked flawlessly for several years. The second switches 120 VAC to a transformer which supplies 12 VAC to a string of LED landscape lights. Very occasionally, like two times in a year, this timer loses its time setting and flashes 12:00. It then blinks and resets to manual mode. The ST01 timer is battery powered. It has no neutral connection and simply switches the line to load wire. It apparently uses an electromechanical switch as I can hear it click. Intermatic suggests adding a line filter at the input to the switch with inductive loads. I tried that and the timer reset to 12:00 every time it switched! I then moved the line filter to the output of the timer just before the transformer. It now seems to work correctly although the problem was so occasional I will not know for some time. My theory is that the inductive kick from the transformer leakage inductance is getting capacitively coupled into the timer circuit.
bababrown
]]>Low Voltage and Limited Energybababrownhttp://forums.mikeholt.com/showthread.php?t=187981Smoke Relocatehttp://forums.mikeholt.com/showthread.php?t=187947&goto=newpost
Wed, 15 Nov 2017 22:16:21 GMTHave a smoke detector mounted in drop ceiling with slab above(guessing distance from ceiling to slab about 3'. They want smoke detector to be relocated to bottom of slab above. Two questions.

1. Limited drawings but trying to find out of ceiling is being removed and now its exposed. Could the smoke be concealed by ceiling?? Then you would need some sort of remote test switch or LED indicator in view, correct?
2. What do you think would be involved to do this relocate? There probably isn't enough cable to extend it to the new location. If there ceiling is remaining I guess you could put a box with a terminal strip right above ceiling where it was mounted and extend wire up to new location( no splicing allowed) or maybe you have to pull the wires back to a location then mount a terminal block or even pull back to the other devices and run new cable. It's a class A system. with return loop.

Thanks.
]]>Low Voltage and Limited Energymstrlucky74http://forums.mikeholt.com/showthread.php?t=187947Low Voltage Exam Washington County Maryland - Failinghttp://forums.mikeholt.com/showthread.php?t=187939&goto=newpost
Wed, 15 Nov 2017 17:39:48 GMTAny suggestions on prepping for the low voltage exam?
Ive failed it 4 times already. I can not utilize the Index in time.. Is there any tricks...Any suggestions on prepping for the low voltage exam?

Ive failed it 4 times already. I can not utilize the Index in time.. Is there any tricks to finding key words in questions to look up?

I take it again Dec 8th and feel no more confident than before.
]]>Low Voltage and Limited EnergyGrapestewhttp://forums.mikeholt.com/showthread.php?t=187939Low voltage wiring in ceiling space.http://forums.mikeholt.com/showthread.php?t=187938&goto=newpost
Wed, 15 Nov 2017 17:39:40 GMTWe have been asked to install a silent alarm system in an office area. The alarm will consist of a series of strobe lights that operate on 6 volts...We have been asked to install a silent alarm system in an office area. The alarm will consist of a series of strobe lights that operate on 6 volts DC. These lights will be ceiling mounted to a suspended ceiling throughout the space. Is it permissible to make open low voltage splices in a plenum ceiling, or do the splices need to be enclosed in a box? We will be using plenum rated cable.
]]>Low Voltage and Limited Energydanno1202http://forums.mikeholt.com/showthread.php?t=187938820 CATV, and CAT5ehttp://forums.mikeholt.com/showthread.php?t=187937&goto=newpost
Wed, 15 Nov 2017 17:27:06 GMT1) How high must the RG6 cable from Sat, or device between above the existing ground terrain?
2) So with POE, this is running in the building,...1) How high must the RG6 cable from Sat, or device between above the existing ground terrain?

2) So with POE, this is running in the building, ground floor to the roof could be multiple story, with no conduit. Do I need conduit in the building and or the roof? Obviously if you say only the roof, it must be grounded. The expected current is between 125ma to 150ma.

3) The distance from the POW injector to the router/switch can be how long?

4) Must I ground the Cat5e that is coming from an enclosure, perhaps non metallic, on the roof to the building ground at the entry point?

5) All openings between floors where cable passes through will need to be sealed?
]]>Low Voltage and Limited Energystormhawkhttp://forums.mikeholt.com/showthread.php?t=187937